package servlet_pack;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import dao.IUserDao;
import dao.impl.UserDaoImpl;
import entity.Users;

/**
 * Servlet implementation class LoginServlet
 */
@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public LoginServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		response.getWriter().append("Served at: ").append(request.getContextPath());
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		String name=request.getParameter("user");
		String pwd=request.getParameter("pwd");
		HttpSession sename=request.getSession();
		Users user=new Users(name,pwd);
		IUserDao lodao=new UserDaoImpl();
		int num=lodao.login(user);
		if(num>0) {
			sename.setAttribute("user",name);
			request.getRequestDispatcher("Main_page.jsp").forward(request, response);
		}else {
			response.sendRedirect("login.jsp");
		}
		doGet(request, response);
	}

}
